ADL5566

Data Sheet

Rev. C | Page 22 of 24

1

24

ADL5566

VIIN1

VIP1

NC

NC

VIP2

VIN2

VON1

VOP1

NC

NC

VOP2

VON2

23

22

21

20

19

7

8

9

10

11

12

2

3

4

5

6

18

17

16

15

14

13

EXPOSED PADDLE

VCOM-2

VCOM-1

ENBL_1

ENBL_2

2

2

C11

DNI

DNI

DNI

R28

DNI

T3

T4

GND

+

R5

0Ω

R24

0Ω

R21

0Ω

R8

0Ω

C3

0.1µF

C4

0.1µF

C6

0.1µF

C7

0.1µF

C5

0.1µF

L1

5.1nH

C18

0.01µF

C17

0.01µF

C19

0.01µF

C20

0.01µF

C21

10µF

R13

84.5Ω

R14

84.5Ω

R16

84.5Ω

R15

84.5Ω

R19

34.8Ω

R20

34.8Ω

R18

34.8Ω

R17

34.8Ω

R27

DNI

R26

0Ω

R25

0Ω

C10

DNI

C12

DNI

DNI

2

T1

R1

DNI

C14

0.01µF

C13

0.01µF

R10

36Ω

R9

36Ω

DNI

2

C2

0.1µF

DNI

T2

C15

0.01µF

C16

0.01µF

R2

DNI

R4

0Ω

R3

0Ω

R12

36Ω

R11

36Ω

VIN1

VIP1

C1

VIP2

VIN2

VOP1

VON1

VON2

VOP2

L2

5.1nH

Figure 53. Evaluation Board Schematic

Table 7. Evaluation Board Configuration Options

Component

Description

Default Condition

Ground and supply test loops.

C5, C7, C21, L1,

L2

Power supply decoupling. The supply decoupling consists of a 10 μF capacitor (C21) and

two 0.1μF capacitors, C5 and C7, connected between the supply lines and ground.

L1 and L2 decouple the ADL5566 from the power supply.

C21 = 10 μF (Size D),

C5, C7 = 0.1 μF (Size 0402),

L1, L2 = 5.1 nH (Size 0603)

VIN1, VIP1, VIP2,

VIN2, R1, R2, R3,

R4, R5, R8, R9,

R10, R11, R12,

R21, R24, C13,

C1, C12, C14,

C15, C16, T1, T2

Input interface. The SMA labeled VIN1 is the input to Amplifier 1. T1 is a 1:1

impedance ratio balun to transform a single-ended input into a balanced differential

signal. Removing R3, installing R1 (0 Ω), and installing an SMA connector (VIP1) allow

driving from a differential source. C13 and C14 provide ac coupling. C12 is an

optional bypass capacitor. R9 and R10 provide a differential 50 Ω input termination. The

SMA labeled VIP2 is the input to Amplifier 2. T2 is a 1:1 impedance ratio balun to

transform a single-ended input into a balanced differential signal. Removing R4,

installing R2 (0 Ω), and installing an SMA connector (VIN2) allow driving from a

differential source. C15 and C16 provide ac coupling. C1 is an optional by pass capacitor.

R11 and R12 provide a differential 50 Ω input termination.

VIN1, VIP2 = installed,

VIP1, VIN2 = not installed,

R1, R2 = DNI,

R3, R4, R5, R8, R21, R24 = 0 Ω

(Size 0402),

R9, R10, R11, R12 = 36 Ω (Size 0402),

C13, C14, C15, C16 = 0.01 μF

(Size 0402),

C1, C12 = DNI,

T1, T2 = ETC1-1-13 (M/A-COM)

VOP1, VON1,

VON2, VOP2,

C10, C11, C17,

C18, C19, C20,

R13, R14, R15,

R16, R17, R18,

R19, R20, R25,

R26, R27, R28,

T3, T4

Output interface. The SMA labeled VOP1 is the output for Amplifier 1. T3 is a 1:1

impedance ratio balun used to transform a balanced differential signal to a single-

ended signal. Removing R25, installing R27 (0 Ω), and installing an SMA connector

(VON1) allow differential loading. C10 is an optional bypass capacitor. C17 and C18

provide ac coupling. R13, R14, R17, and R16 are provided for generic placement of

matching components.

The SMA labeled VON2 is the output for Amplifier 2. T4 is a 1:1 impedance ratio balun

used to transform a balanced differential signal to a single-ended signal. Removing R26,

installing R28 (0 Ω), and installing an SMA connector (VOP2) allow differential loading.

C11 is an optional bypass capacitor. C19 and C20 provide ac coupling. R15, R16, R19,

and R20 are provided for generic placement of matching components.

The evaluation board is configured to provide a 200 Ω to 50 Ω impedance

transformation with an insertion loss of 11 dB.

VOP1, VON2 = installed,

VON1, VOP2 = not installed,

R13, R14, R15, R16 = 84.5 Ω

(Size 0402),

R17, R18, R19, R20 = 34.8 Ω

(Size 0402),

R25, R26 = 0 Ω (Size 0402),

R27, R28 = DNI (Size 0402),

C10, C11 = DNI (Size 0402),

C17, C18 = 0.01 μF (Size 0402),

C19, C20 = 0.01 μF (Size 0402),

T3, T4 = ETC1-1-13 (M/A-COM)